Acronym for "I Have a Dildo Up Me Arse", a term relating to a person with an extremely strange walk and sits down very gingerly so much so that it appears they have some sort of large sex aid inserted into their anus and it is causing extreme discomfort
Cor look at jason over there, neverseen anyone walking and sitting down like that, looks like he's got a 12 incher up his arse, he's IHADUMA, it's gonna be the end of him if he doesn't remove it
Used to pretend that something was obviously agreed upon when actually you never discussed it with anyone.
Typically used when a project manager has no clue what their project is about, has never shown any interest in it, and wakes up at the 11th hour all panicky because things don't work like they dreamt they would.
Nuclear reactor starts melting Project Manager: IHABU there would be an emergency stop button on the reactor!
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.